An oral peripheral examination is a routine component of any speech/language evaluation. The purpose of an oral-peripheral examination is to determine whether there are any structural or functional problems with the oral mechanism that could be contributing to speech problems. I have included videos of an oral peripheral examination with both an older and younger child as they often require different strategies. With children who are very young or noncompliant a formal examination is not always possible.
The GFTA-3 is a commonly used standardized articulation assessment. Clients are asked to label pictures and the child's speech productions are recorded and then analyzed to determine whether they are developmentally appropriate. Watch these videos to see the GFTA-3 being administered and scored.
For children who do not have enough language to participate in a standardized articulation assessment but are producing sounds, we collect a phonemic inventory. This means we write down all of the 1) phonemes and 2) syllable shapes that the child produces during the session. Phonemes are typically recorded using the International Phonetic Alphabet found here. Syllable shape refers to the arrangement of consonants and vowels (e.g. up=VC=vowel + consonant; cat=CVC= consonant + vowel + consonant). A phonemic inventory worksheet is included in your Diagnostic Resource Binder.
One of the primary things we try to determine when we are analyzing a child's speech errors is whether they are simple articulation errors or a more encompassing pattern of errors called a phonological process. I have included one video that explains a bit about how we make this determination and another that provides a good example of ways we can explain this different to parents. (The second video is good place to start if the first one is still a bit confusing.)
When a child's speech is particularly impaired, we often try to determine if the his exhibiting Childhood Apraxia of Speech. This video provides an excellent overview of CAS. You will also find a document in your Diagnostic Resource Binder outlining signs of CAS.